From: Jun Gao <jun....@mediatek.com>

Add i2c compatible for MT7622. Compare to MT8173 i2c controller,
MT7622 limit message size to 255, and not support 4GB DMA mode.

Signed-off-by: Jun Gao <jun....@mediatek.com>
---
 drivers/i2c/busses/i2c-mt65xx.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c
index 9bedf0b..2c7f847 100644
--- a/drivers/i2c/busses/i2c-mt65xx.c
+++ b/drivers/i2c/busses/i2c-mt65xx.c
@@ -172,6 +172,14 @@ struct mtk_i2c {
        .max_comb_2nd_msg_len = 31,
 };
 
+static const struct i2c_adapter_quirks mt7622_i2c_quirks = {
+       .max_num_msgs = 255,
+       .max_write_len = 65535,
+       .max_read_len = 65535,
+       .max_comb_1st_msg_len = 65535,
+       .max_comb_2nd_msg_len = 65535,
+};
+
 static const struct mtk_i2c_compatible mt6577_compat = {
        .quirks = &mt6577_i2c_quirks,
        .pmic_i2c = 0,
@@ -190,6 +198,15 @@ struct mtk_i2c {
        .support_33bits = 0,
 };
 
+static const struct mtk_i2c_compatible mt7622_compat = {
+       .quirks = &mt7622_i2c_quirks,
+       .pmic_i2c = 0,
+       .dcm = 1,
+       .auto_restart = 1,
+       .aux_len_reg = 1,
+       .support_33bits = 0,
+};
+
 static const struct mtk_i2c_compatible mt8173_compat = {
        .pmic_i2c = 0,
        .dcm = 1,
@@ -201,6 +218,7 @@ struct mtk_i2c {
 static const struct of_device_id mtk_i2c_of_match[] = {
        { .compatible = "mediatek,mt6577-i2c", .data = &mt6577_compat },
        { .compatible = "mediatek,mt6589-i2c", .data = &mt6589_compat },
+       { .compatible = "mediatek,mt7622-i2c", .data = &mt7622_compat },
        { .compatible = "mediatek,mt8173-i2c", .data = &mt8173_compat },
        {}
 };
-- 
1.8.1.1

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